Mothers exchanged stories about how their children fit in at their new schools.
At some point, they exchanged texts about the "news" and agreed to meet at Dzhokhar Tsarnaev's dorm room in Dartmouth.
And once on the trains, commuters - normally travelling in gloomy silence - cheerily exchanged stories about their first euro experiences.
In what might be a last chance to revive its credibility, the guerrillas and the government this week exchanged proposals about a ceasefire.
The two spoke as often as every day on the phone and exchanged emails about their daily lives, people familiar with the situation said.
Earlier this month, the companies exchanged proposals about hammering out some sort of global licensing agreement over standard essential patents, and both seem to agree that binding arbitration is the way to go.
FORBES: Are Apple And Google Going To Settle Their Patent War?
And we exchanged ideas about how we can advance those negotiations, and I've shared the importance of providing support to President Abbas and the Palestinian Authority so that they can be in position to have fruitful negotiations with the Israelis that can bring about, in a timely fashion, a two-state solution.
The statement goes on to describe how IRS workers exchanged email alerts about the "emerging issues" over the applications.
When the company allowed workers to post freely, blogging and reading went up and employees exchanged more information about both work and play.
Much of the case has hinged on electronic documentation: emails that Ceglia claimed to have exchanged with Zuck about Facebook and electronic copies of the alleged contract that the two signed.
FORBES: Facebook Offers Court 'Smoking Gun' Against Paul Ceglia
This is because an offer is not legally binding until contracts have been exchanged, usually about two months after an offer has been accepted (except in Scotland, where a verbal agreement commits both sides).
ECONOMIST: The housing market has not heard of globalisation
Across from me was a tall, large man, middle-aged, with whom I exchanged a few words about the weather and our plans for the following day.
But Dart and Cook County State's Attorney Anita Alvarez, both prominent local Democrats, exchanged tense words Friday about who should accept responsibility for having Robbins brought to Chicago from Indiana.
AllFacebook reports that she had exchanged messages with a Facebook friend about leaving Chland.
He had also exchanged texts with a former girlfriend about their break-up.
Other family members exchanged impassioned views by email and phone about missed opportunities and the family's shortcomings.
After a relatively quiet night on Sunday, fire was again exchanged both ways across the border at about 0800 local time (0100GMT) on Monday.
They kept each other informed about their work, discussed art and literature, and exchanged sketches, drawings and prints.
BBC: A new book of Van Gogh's letters is to be published in 2008-9
Mr Bell exchanged emails with a woman following an online debate about UKIP's national billboard campaign on immigration called "Enough's Enough".
Similar arguments prevailed in the case of a university student who posted violent short stories about a female classmate in an online forum, and later exchanged emails with a man in which they discussed carrying out murder.
Floyd Mayweather Sr. and Reuben Guerrero who both train their sons exchanged words after Reuben Guerrero went into a rant about Mayweather being a woman beater for the altercation with the mother of his children that got him jailed for 70 days last year.
He said he had exchanged messages and photos "of an explicit nature" with about six women over three years.
BBC: Anthony Weiner 'to seek help' after lewd photos scandal
When FORBES asked Avtovaz President Alexei Nikolaev about his ties to Boris Berezovsky, the industrial manager and his aides exchanged worried looks.
If it were true that the president in December was unconcerned about the gifts, he presumably would have told the truth under oath in his January deposition about the large number of gifts that he and Ms. Lewinsky had exchanged.
You know a lot about the person you are talking to, even before you've ever exchanged a single word.
"It was the intention to melt them down but they were exchanged for our medieval bells and hung in the tower wheee they rang for about 100 years, but were taken down in 1964, " he said.
As I wrote in this feature about Bitcoin for the magazine in April, Bitcoins are created with cryptographic functions and then stored and exchanged without the help of banks.
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